Yesterday’s Homework
Yesterday’s Homework
1. Write a balanced formula equation for the reaction that occurs between each of the following pairs of reactants.
Yesterday’s Homework
magnesium and nitric acid
Yesterday’s Homework
magnesium and nitric acid
Mg + HNO3 →
Yesterday’s Homework
magnesium and nitric acid
Mg + HNO3 →
Mg(NO3)2 + H2
Yesterday’s Homework
magnesium and nitric acid
Mg + 2HNO3 →
Mg(NO3)2 + H2
Yesterday’s Homework
aluminum and sulfuric acid
Yesterday’s Homework
aluminum and sulfuric acid
Al + H2SO4 →
Yesterday’s Homework
aluminum and sulfuric acid
Al + H2SO4 →
Al2(SO4)3 + H2
Yesterday’s Homework
aluminum and sulfuric acid
2Al + 3H2SO4 →
Al2(SO4)3 + 3H2
Yesterday’s Homework
calcium carbonate and hydrobromic acid
Yesterday’s Homework
calcium carbonate and hydrobromic acid
CaCO3 + HBr →
Yesterday’s Homework
calcium carbonate and hydrobromic acid
CaCO3 + HBr →
CaBr2 + H2O + CO2
Yesterday’s Homework
calcium carbonate and hydrobromic acid
CaCO3 + 2HBr →
CaBr2 + H2O + CO2
Yesterday’s Homeworkpotassium hydrogen carbonate
and hydrochloric acid
Yesterday’s Homeworkpotassium hydrogen carbonate
and hydrochloric acid
KHCO3 + HCl →
Yesterday’s Homeworkpotassium hydrogen carbonate
and hydrochloric acid
KHCO3 + HCl →
KCl + H2O + CO2
Yesterday’s Homework
2. Identify the conjugate acid-base pairs in the following reactions.
Yesterday’s Homework
NH4 + OH- ↔
NH3 + H2O
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NH4 + OH- ↔
NH3 + H2O
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HBr + H2O ↔
H3O+ + Br-
Yesterday’s Homework
HBr + H2O ↔
H3O+ + Br-
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CO32- + H2O ↔
HCO3- + OH-
Yesterday’s Homework
CO32- + H2O ↔
HCO3- + OH-
Yesterday’s Homework
HSO4- + H2O ↔
H3O+ + SO42-
Yesterday’s Homework
HSO4- + H2O ↔
H3O+ + SO42-
Daily Quiz 599
Daily Quiz 5991. When zinc reacts with hydrochloric
acid, one of the products will be:
a. Znb. HClc. H2Znd. ZnCl2
Daily Quiz 5992. Identify the acid:
HBr + H2O → H3O+ + Br-
a. HBrb. H2Oc. H3O+
d. Br-
Daily Quiz 5993. Identify the acid:
NH3 + H2O → NH4+ + OH-
a. NH3
b. H2Oc. NH4
+ d. OH-
Daily Quiz 5994. Identify the conjugate base:
H2SO4 → 2H+ + SO42-
a. H2SO4
b. H2Oc. H+ d. SO4
2-
Daily Quiz 5991. When zinc reacts with hydrochloric
acid, one of the products will be:
a. Znb. HClc. H2Znd. ZnCl2
Daily Quiz 5991. When zinc reacts with hydrochloric
acid, one of the products will be:
a. Znb. HClc. H2Znd. ZnCl2
Daily Quiz 5992. Identify the acid:
HBr + H2O → H3O+ + Br-
a. HBrb. H2Oc. H3O+
d. Br-
Daily Quiz 5992. Identify the acid:
HBr + H2O → H3O+ + Br-
a. HBrb. H2Oc. H3O+
d. Br-
Daily Quiz 5993. Identify the acid:
NH3 + H2O → NH4+ + OH-
a. NH3
b. H2Oc. NH4
+ d. OH-
Daily Quiz 5993. Identify the acid:
NH3 + H2O → NH4+ + OH-
a. NH3
b. H2Oc. NH4
+ d. OH-
Daily Quiz 5994. Identify the conjugate base:
H2SO4 → 2H+ + SO42-
a. H2SO4
b. H2Oc. H+ d. SO4
2-
Daily Quiz 5994. Identify the conjugate base:
H2SO4 → 2H+ + SO42-
a. H2SO4
b. H2Oc. H+ d. SO4
2-
Why do molecules lose hydrogen ions?
Why do molecules lose hydrogen ions?
Because water is polar.
Hydrogen ions will dissociate (come off) only if they are attached
with polar bonds.
HCl
HCl
HCl δ+ δ-
HCl δ+ δ-
HCl
Cl-
H2SO4
H2SO4
H2SO4
HSO4-
HSO4-
SO42-
Ethanoic acid
Ethanoic acid
H O H-C-C H O-H
Ethanoic acid
Ethanoic acid
Ethanoic acid
Ethanoic acid
Homework• Read pages 600-601.
• Do the Section 19.1 Assessment questions 4-9